@GwtCompatible public abstract class ForwardingList<E> extends ForwardingCollection<E> implements List<E>
This class does not implement RandomAccess. If the
delegate supports random access, the ForwardingList subclass should
implement the RandomAccess interface.
Warning: The methods of ForwardingList forward
indiscriminately to the methods of the delegate. For example,
overriding add(int, E) alone will not change the behavior of addAll(int, java.util.Collection<? extends E>), which can lead to unexpected behavior. In this case, you should
override addAll as well, either providing your own implementation, or
delegating to the provided standardAddAll method.
The standard methods and any collection views they return are not
guaranteed to be thread-safe, even when all of the methods that they depend
on are thread-safe.
| Modifier | Constructor and Description |
|---|---|
protected |
ForwardingList()
Constructor for use by subclasses.
|
| Modifier and Type | Method and Description |
|---|---|
void |
add(int index,
E element) |
boolean |
addAll(int index,
Collection<? extends E> elements) |
protected abstract List<E> |
delegate()
Returns the backing delegate instance that methods are forwarded to.
|
boolean |
equals(Object object) |
E |
get(int index) |
int |
hashCode() |
int |
indexOf(Object element) |
int |
lastIndexOf(Object element) |
ListIterator<E> |
listIterator() |
ListIterator<E> |
listIterator(int index) |
E |
remove(int index) |
E |
set(int index,
E element) |
protected boolean |
standardAdd(E element)
A sensible default implementation of
ForwardingCollection.add(Object), in terms of
add(int, Object). |
protected boolean |
standardAddAll(int index,
Iterable<? extends E> elements)
A sensible default implementation of
addAll(int, Collection), in
terms of the add method of listIterator(int). |
protected boolean |
standardEquals(Object object)
A sensible definition of
equals(Object) in terms of ForwardingCollection.size()
and ForwardingCollection.iterator(). |
protected int |
standardHashCode()
A sensible definition of
hashCode() in terms of ForwardingCollection.iterator(). |
protected int |
standardIndexOf(Object element)
A sensible default implementation of
indexOf(java.lang.Object), in terms of listIterator(). |
protected Iterator<E> |
standardIterator()
A sensible default implementation of
ForwardingCollection.iterator(), in terms of
listIterator(). |
protected int |
standardLastIndexOf(Object element)
A sensible default implementation of
lastIndexOf(java.lang.Object), in terms of
listIterator(int). |
protected ListIterator<E> |
standardListIterator()
A sensible default implementation of
listIterator(), in terms of
listIterator(int). |
protected ListIterator<E> |
standardListIterator(int start)
A sensible default implementation of
listIterator(int), in terms
of ForwardingCollection.size(), get(int), set(int, Object), add(int, Object), and remove(int). |
protected List<E> |
standardSubList(int fromIndex,
int toIndex)
A sensible default implementation of
subList(int, int). |
List<E> |
subList(int fromIndex,
int toIndex) |
add, addAll, clear, contains, containsAll, isEmpty, iterator, remove, removeAll, retainAll, size, standardAddAll, standardClear, standardContains, standardContainsAll, standardIsEmpty, standardRemove, standardRemoveAll, standardRetainAll, standardToArray, standardToArray, standardToString, toArray, toArraytoStringprotected ForwardingList()
protected abstract List<E> delegate()
ForwardingObjectForwardingSet.delegate(). Concrete subclasses override this method to supply
the instance being decorated.delegate in class ForwardingCollection<E>public boolean addAll(int index, Collection<? extends E> elements)
public int lastIndexOf(Object element)
lastIndexOf in interface List<E>public ListIterator<E> listIterator()
listIterator in interface List<E>public ListIterator<E> listIterator(int index)
listIterator in interface List<E>public int hashCode()
protected boolean standardAdd(E element)
ForwardingCollection.add(Object), in terms of
add(int, Object). If you override add(int, Object), you
may wish to override ForwardingCollection.add(Object) to forward to this
implementation.protected boolean standardAddAll(int index, Iterable<? extends E> elements)
addAll(int, Collection), in
terms of the add method of listIterator(int). If you
override listIterator(int), you may wish to override addAll(int, Collection) to forward to this implementation.protected int standardIndexOf(@Nullable Object element)
indexOf(java.lang.Object), in terms of listIterator(). If you override listIterator(), you may wish to
override indexOf(java.lang.Object) to forward to this implementation.protected int standardLastIndexOf(@Nullable Object element)
lastIndexOf(java.lang.Object), in terms of
listIterator(int). If you override listIterator(int), you
may wish to override lastIndexOf(java.lang.Object) to forward to this
implementation.protected Iterator<E> standardIterator()
ForwardingCollection.iterator(), in terms of
listIterator(). If you override listIterator(), you may
wish to override ForwardingCollection.iterator() to forward to this implementation.protected ListIterator<E> standardListIterator()
listIterator(), in terms of
listIterator(int). If you override listIterator(int), you
may wish to override listIterator() to forward to this
implementation.@Beta protected ListIterator<E> standardListIterator(int start)
listIterator(int), in terms
of ForwardingCollection.size(), get(int), set(int, Object), add(int, Object), and remove(int). If you override any of these
methods, you may wish to override listIterator(int) to forward to
this implementation.@Beta protected List<E> standardSubList(int fromIndex, int toIndex)
subList(int, int). If you
override any other methods, you may wish to override subList(int,
int) to forward to this implementation.@Beta protected boolean standardEquals(@Nullable Object object)
equals(Object) in terms of ForwardingCollection.size()
and ForwardingCollection.iterator(). If you override either of those methods, you may
wish to override equals(Object) to forward to this implementation.@Beta protected int standardHashCode()
hashCode() in terms of ForwardingCollection.iterator().
If you override ForwardingCollection.iterator(), you may wish to override hashCode() to forward to this implementation.Copyright © 2010-2015. All Rights Reserved.